Electric safe-lock



(No Model.)

G. L. DAMON.

ELECTRIC SEEE LOCK.

No. 437,682. Patented Oct. '7, 1890.

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(No Model.) 2 Sheets-Sheet 2 G. L. DAMON.

ELECTRIC: SAFE 1.00K. No. 437,682. Patented Oct. 7, 189.0.

www/S65. werden? UNirED STATES i PATENT OFFICE.

GEORGE L. DAMON, OF BOSTON, MASSACHUSETTS.

ELECTRIC SAFE-LOCK.

SPECIFICATION forming part of Letters Patent No. 487,682, dated October7, 1890. Application tiled December 13, 1889. Senal No. 333,626. (Nomodel.)

To all whom, it may concern.-

Be it known that I, GEORGE L. DAMON, of Boston, county of Suffolk, Stateof Massachusetts, have invented an Improvement in Safe- Locks, of whichthe following description, in connection with the accompanying drawings,is a specification, like letters and figures on the drawingsrepresenting like parts.

This invention relates to locks for safes, vaults, and otherdepositories for valuables, and has for its object to provide anelectrically-actuated mechanism to be used in connection with atime-lock,whereby the door of the safe or vault may be maintained lockedafter the time-lock has operated.

My invention therefore consists in the combination,with the door of asafe or vault and its bolt-operating mechanism and a time-lock, of anelectrically-actuated mechanism co-operating with the time-lock tomaintain the safe-door locked after the time-lock has operated,substantially as will be described.

Other features of my invention will be pointed out in the claim at theend of this specification.

Figure l represents a sufficient portion of a safe or vault,itsbolt-operating mechanism, the time-lock, and the electrically-actuatedmechanism to enable my invention to be understood; Fig. 2, a sectionaldetail through the safe-door on line 4r Fig. l; and Fig. 3, a sectionaldetail on line m 0c, Fig. l. Fig. 4 is an inner side view of a door withmy improvements added, the bolts being thrown outward, the said doorbein g suitable for a safe or vault.

The safe or vault a is provided with the door a', secured thereon, as byhinges a2, the bolt-operating mechanism being preferably constructed andoperated by gravity, substantially as shown and described in UnitedStates Patent No. 356,547, granted to me January 25, 1887, as assigneeto O. F.. Pillard, such construction being best shown in Fig. 4 of thisapplication, wherein the bars A A2 and A3A4, bolts B l5 B2, and thecarrying-bar O,weight 3, arms 4 and 6, and rock-shaft 5 are lettered asin said patent to indicate like parts, and need not be further describedherein.

The bar a3 is provided, as herein shown, with a shoulder a4, normallyengaged by the short arm 2 of one lever a5 of a compound lever, thelever a5 being pivoted to the safedoor and having its long arm providedwith a stud a, extended into a slot al of the other lever as of thecompound lever, the lever as being pivotally supported, as at a9, by thesafe-door.

The lever a9 is normally engaged by one end of a lever b, pivoted as atb', and having connected to it one end of a link b2, having its otherend operatively connected to a time-lock mechanism b3, which may be ofany usual or well-known construction such as now commonly used on safes.

The bolt-operating bar d3 is held elevated when the door is locked bythe lever a5, the latter being held stationary by the pivoted bar as,which in turn is maintained in the position shown by the lever b,connected to the time-lock.

As now commonly constructed the bolt-operating bars are permitted todescend by gravity, as described in the patent referred to, wherein thebar f corresponds to the bar co3, herein shown, or are otherwise moved,when the lever b is moved out of engagement with the pivoted slotted baras, by the operation of the time-lock, which in practice is set tooperate at a predetermined time.

In some instances it may be desirable to keep the door locked after thetime-lock has operated-as, for instance, the president or otherduly-authorized officer of a bank or safedeposit may wish the opening ofthe safe-door to be absolutely under his control. To accomplish this object, l-have provided an electrically-actuated mechanism consisting, asherein shown, of a lever el, pivoted, as at d', and having one endadapted to engage the pivoted bar a8 and its other end connected by alink d2 to an elbow-lever d3, pivoted, as at d4, and having secured toor forming part of it an armature d5 of an electro-magnet d, connectedin circuit, as herein shown, with a battery d? and with a switch orcircuit-controller, (herein shown as a push-button (13,) which inpractice is located outside of the safe, and may be at any desired ordistant place or station-for instance, at the presidents office orhouse.

The circuit of the electro-magnet is preferably provided with a switchor circuit-controller, which is normally open when the safedoor is open,the said circuit-controller being IOO herein shown as a spring-actuatedrod e, provided with a head e', adapted to be brought into contact witha metallic block or disk e2, secured to but insulated from the safe. Oneend e3 of the wire of the electro-magnet d is connected to thespring-pressed rod e, and the other end e4 of the said wire is securedto the door. The block e2 is connected by wire c5 to one terminal of thepush-button da, and the other terminal of the said push-button isconnected by Wire e6 to one pole of the battery (Z7, the other pole ofthe said battery e being joined to the safe by Wire e7.

In operation the time-lock moves the link b2 in the direction of arrow20, Fig. l, and thereby throws the lower end of the lever b out of thepath of movement of the pivoted bar as; but the latter is prevented frombeing moved by the lever d, and the safe-door remains locked until thecircuit of the electro- A magnet d6 is closed at the normally-opencircuit-controller or push-button d8. As soon as the circuit is closedthe magnet is energized and its armature attracted by it, thereby movingthe link (12in the direction of the arrow 2O and turning the lever d onits pivot, so as to move its end out of the path of movement of thepivoted bar as, thus leaving the bolt-operating bars free to drop andunlock the safe. As shown in Figs. l and 4, the door is locked. When thelevers b and d have been moved out of engagement With the bar d8, asdescribed,

y the lever a5 is released, it in turn releasing the bolt-operating bard8, which falls by the aotion of the weight f3, attached thereto, (seeFig. 4,) causing the pinion tto rotate ninety degrees to move thecarrying bar C, as described in the patent referred to, to withdraw thebolts and unlock the door.

The carrying-bar C has in it a series of slots, (not shown,) throughwhich are extended studs Z910, screwed into the door-plate a andpreferably provided with a roller en- 1 tering said slot to guide thebar in its horizontal reciprocations to throw or draw the bolts. Thestuds Z910 have mounted loosely thereon disks 513 b4, each of which hasattached loosely thereto by a screw b5 one of the bolts referred to, thedisks Z913 having extended therethrough studs be to enter openings inthe carrying-bar, said openings being at right angles to the slotsreferred to and bcing longer than the diameter of the studs 176. Thescrews b5, connecting the bolts to the disks b4, are extended throughsaid disks and enter similar openings.

When the carrying-bar is moved in one or the other direction by the linkt and gear t', the disks Z213 b4 are rotated in the proper direction bythe operation of slots and openings and studs therein to thrust thebolts out or draw them in.

The combination, with a safe-door,boltop erating mechanism includ ingthe bolt-operating bar d3, having a shoulder da compound leverconsisting of a lever a5 to engage said shoulder and maintain the bar d3in position to keep the door locked, and a slotted lever a8, connectedto the lever a5, of a lever d to engage said slotted lever, anelectro-magnet having its armature connected to lever d, acircuit-controller located in an electric circuit connected to theelectro-magnet, and an electric generator in circuit with said electro-Vmagnet to remove the lever` d from engagement With'the lever as,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE L. DAMON.

